A gigantic ship suddenly appears over Tokyo Bay, prompting a state of emergency. In the midst of the chaos, Nobuo Koyama, who works at a publishing company, gets caught in the spaceship's crash. 
Dear Mr. Nobuo,

I’m the one who was inside you.

Eight years ago, I became a parasitic
infestation within you, a dying man. 
I moved to Osaka, where I acted and
lived like a human being.
Although I know I was being very selfish,
I was able to enjoy a humble but happy time.
Koyama Nobuo-sama
Ich bin derjenige, der sich in Ihnen befindet.

Ich habe mich vor acht Jahren, als Sie im Sterben lagen,
in Ihnen eingenistet …
Otto anni fa, ho assunto il controllo del suo 

corpo morente, mi sono trasferito
Здравствуйте, я тот, кто всё это время был в вашем теле.




Я вселился в вас восемь лет назад, когда вы были